Patient: Description of condition (onset, main symptoms, hospital visited, etc.): My mother, 72 years old, has a blocked left carotid artery, more than 70% on the left side, and saw your report on the Internet. The old man is dizzy and vomits from time to time, sometimes he cannot turn around, and when he does, he gets dizzy. Conservative treatment in local hospital is not too effective Would like to ask about the effectiveness and risk level of surgery and stenting. My mother has concerns about stents. What is the success rate of surgery? Doctor: Surgery is generally not possible for occluded carotid arteries. However, surgery should be performed as soon as possible on the side where the stenosis is more than 70%. Surgery is safe in most cases. For severe carotid stenosis, surgery is preferred over stenting, surgery has better long-term results than stenting, and perioperative stroke/mortality surgery is lower than stenting! Cost surgery is much lower than stenting.